He would not comment on reports that RSE Ventures, the investment vehicle of Miami Dolphins owner Stephen Ross, was teaming up with Qatar to buy CVC's stake in a potential $7 billion-$8 billion deal..

Asked at the British Grand Prix whether the private equity fund had a deadline by which they had to sell their 35.5 percent stake, the media-shy businessman replied: "No, we don't. There is no end date.

"We have 12 year funds, which we have to return the original money. We have already done that. So the pressure's off," added Mackenzie.

"We like owning it (Formula One), we don't want to sell it. There are always some people who'd like to buy it, it's a very good business."

CVC has twice tried to float Formula One, most recently in 2013, but the plans stalled and the fund instead sold stakes to U.S. investment groups BlackRock and Waddell & Reed, along with Norway's Norges Bank.

It sold down its holding from 63 percent in 2012 in deals that at the time gave the business an enterprise value, which includes debt and equity, of $9.1 billion.

A source familiar with the matter told Reuters last month that a deal with Ross and the Qataris could be done within six weeks.
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